utils-std

commit: 48f6992741d06ac8701d39ccbf44cd0553271041
parent 5ebd5d747ab67436708a92e87cbe1b2b42411c6f
Author: Haelwenn (lanodan) Monnier <contact@hacktivis.me>
Date:   Tue, 12 Mar 2024 13:01:41 +0100

lib/symbolize_mode.c: new

Diffstat:
M
Makefile
5
++++-
M
lib/mode.h
4
++++
A
lib/symbolize_mode.c
64
++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
M
test-lib/Kyuafile
1
+
A
test-lib/symbolize_mode.c
37
+++++++++++++++++++++++++++++++++++++

5 files changed, 110 insertions(+), 1 deletion(-)
diff --git a/Makefile b/Makefile
@@ -13,7 +13,7 @@ all: $(EXE) $(MAN1SO)
 	rm -f ${<:=.gcov} ${@:=.gcda} ${@:=.gcno}
 	$(CC) -std=c99 $(CFLAGS) -c -o $@ $<
 
-TEST_LIBS = test-lib/mode test-lib/strtodur
+TEST_LIBS = test-lib/mode test-lib/strtodur test-lib/symbolize_mode
 .PHONY: check
 check: all $(TEST_LIBS)
 	MALLOC_CHECK_=3 POSIX_ME_HARDER=1 POSIXLY_CORRECT=1 LDSTATIC=$(LDSTATIC) kyua test || (kyua report --verbose --results-filter=broken,failed; false)
@@ -73,6 +73,9 @@ test-lib/mode: test-lib/mode.c lib/mode.c Makefile
 test-lib/strtodur: test-lib/strtodur.c lib/strtodur.c Makefile
 	$(CC) -std=c99 $(CFLAGS) $(ATF_CFLAGS) -o $@ test-lib/strtodur.c lib/strtodur.c $(LDFLAGS) $(ATF_LIBS)
 
+test-lib/symbolize_mode: test-lib/symbolize_mode.c lib/symbolize_mode.c Makefile
+	$(CC) -std=c99 $(CFLAGS) $(ATF_CFLAGS) -o $@ test-lib/symbolize_mode.c lib/symbolize_mode.c $(LDFLAGS) $(ATF_LIBS)
+
 cmd/df: cmd/df.c lib/humanize.c Makefile
 	rm -f ${<:=.gcov} ${@:=.gcda} ${@:=.gcno}
 	$(CC) -std=c99 $(CFLAGS) -o $@ cmd/df.c lib/humanize.c $(LDFLAGS) $(LDSTATIC)
diff --git a/lib/mode.h b/lib/mode.h
@@ -6,3 +6,7 @@
 
 // Returns 0 on error and sets errstr
 mode_t new_mode(const char *mode, mode_t old, const char **errstr);
+
+// Octal file mode in `mode`, symbolic version in `str`
+// Example: mode=040755 ; str="drwxr-xr-x"
+void symbolize_mode(mode_t mode, char str[11]);
diff --git a/lib/symbolize_mode.c b/lib/symbolize_mode.c
@@ -0,0 +1,64 @@
+// Collection of Unix tools, comparable to coreutils
+// SPDX-FileCopyrightText: 2023 Haelwenn (lanodan) Monnier <contact+utils@hacktivis.me>
+// SPDX-License-Identifier: MPL-2.0
+
+#define _POSIX_C_SOURCE 200809L
+#include "bitmasks.h"
+#include "mode.h"
+
+#include <sys/stat.h>
+
+void
+symbolize_mode(mode_t mode, char str[11])
+{
+	switch(mode & S_IFMT)
+	{
+	case S_IFDIR:
+		str[0] = 'd';
+		break;
+	case S_IFCHR:
+		str[0] = 'c';
+		break;
+	case S_IFBLK:
+		str[0] = 'b';
+		break;
+	case S_IFREG:
+		str[0] = '-';
+		break;
+	case S_IFIFO:
+		str[0] = 'f';
+		break;
+	case S_IFLNK:
+		str[0] = 'l';
+		break;
+	case S_IFSOCK:
+		str[0] = 's';
+		break;
+	default:
+		str[0] = '?';
+		break;
+	}
+
+	str[1] = FIELD_MATCH(mode, S_IRUSR) ? 'r' : '-';
+	str[2] = FIELD_MATCH(mode, S_IWUSR) ? 'w' : '-';
+	if(FIELD_MATCH(mode, S_IXUSR))
+		str[3] = FIELD_MATCH(mode, S_ISUID) ? 's' : 'x';
+	else
+		str[3] = '-';
+
+	str[4] = FIELD_MATCH(mode, S_IRGRP) ? 'r' : '-';
+	str[5] = FIELD_MATCH(mode, S_IWGRP) ? 'w' : '-';
+	if(FIELD_MATCH(mode, S_IXGRP))
+		str[6] = FIELD_MATCH(mode, S_ISGID) ? 's' : 'x';
+	else
+		str[6] = '-';
+
+	str[7] = FIELD_MATCH(mode, S_IROTH) ? 'r' : '-';
+	str[8] = FIELD_MATCH(mode, S_IWOTH) ? 'w' : '-';
+	if(FIELD_MATCH(mode, S_IXOTH))
+		str[9] = FIELD_MATCH(mode, S_ISVTX) ? 't' : 'x';
+	else
+		str[9] = '-';
+
+	str[10] = 0;
+}
diff --git a/test-lib/Kyuafile b/test-lib/Kyuafile
@@ -7,3 +7,4 @@ test_suite("utils-std libs")
 -- 7,$|LC_ALL=C.UTF-8 sort
 atf_test_program{name="mode"}
 atf_test_program{name="strtodur"}
+atf_test_program{name="symbolize_mode"}
diff --git a/test-lib/symbolize_mode.c b/test-lib/symbolize_mode.c
@@ -0,0 +1,37 @@
+// utils-std: Collection of commonly available Unix tools
+// SPDX-FileCopyrightText: 2023 Haelwenn (lanodan) Monnier <contact+utils@hacktivis.me>
+// SPDX-License-Identifier: MPL-2.0
+
+#define _POSIX_C_SOURCE 200809L
+#include <atf-c.h>
+#include <assert.h>
+#include <signal.h> // SIGABRT
+#include <sys/stat.h> // umask
+
+#include "../lib/mode.h"
+
+ATF_TC(examples);
+ATF_TC_HEAD(examples, tc)
+{
+	atf_tc_set_md_var(tc, "descr", "some usual examples");
+}
+ATF_TC_BODY(examples, tc)
+{
+	char str[11] = "";
+	
+	symbolize_mode(0040000, str);
+	ATF_CHECK_STREQ("d---------", str);
+
+	symbolize_mode(0040755, str);
+	ATF_CHECK_STREQ("drwxr-xr-x", str);
+
+	symbolize_mode(0020644, str);
+	ATF_CHECK_STREQ("crw-r--r--", str);
+}
+
+ATF_TP_ADD_TCS(tp)
+{
+	ATF_TP_ADD_TC(tp, examples);
+
+	return atf_no_error();
+}